There are many reasons for frequent urination during pregnancy, including normal uterus and head up oppression. In addition, we should be alert to some pathological reasons.
First of all, let's understand the non pathological causes of frequent urination during pregnancy.
The bladder is located in the front of the uterus. At the third month of pregnancy, the uterus is enlarged and comes out of the pelvic cavity. The enlarged uterus can be touched above the pubic symphysis. At this time, the enlarged uterus can stimulate the bladder in front, causing frequent urination. In the middle stage, the uterus slowly increases in the abdominal cavity, and the irritation to the bladder is relieved. After 28 weeks of pregnancy, irregular uterine contractions (stiff uterus) can occur in normal time, but there are generally no symptoms; Once uterine contraction stimulates the bladder, frequent urination may occur. If the term is not reached and uterine contractions are frequent, you should seek medical advice in time to prevent premature delivery.
In the later stage of pregnancy, about 38 weeks later, the fetal head drops into the pelvis, which can compress the bladder and cause frequent urination. During the day, when the expectant mother is standing or sitting, the enlarged uterus compresses the large blood vessels in the abdominal cavity, making the venous return of the lower limbs obstructed, the renal blood flow decreased, and the daytime urine volume decreased. Lying in bed at night reduces the pressure of the uterus on the inferior vena cava, increases the renal blood flow, and increases nocturnal urine, which is a very normal physiological phenomenon in the pregnancy of the baby. However, if there are "three more symptoms" of excessive thirst, excessive drinking, and excessive urine with no weight gain, you should seek medical advice in time to eliminate the possibility of gestational diabetes.
In addition to the above reasons, frequent urination during pregnancy may also be caused by some diseases. If the following symptoms occur, the pregnant mother should seek medical advice in time.
1. Urinary tract infection
Although it is normal for many expectant mothers to urinate frequently at the beginning of pregnancy, some pathological signs cannot be ignored. After pregnancy, due to the displacement of the ureter and bladder, urine accumulates in the urinary tract, making it easy for bacteria to multiply and urinary tract infection to occur. If the expectant mother has pain when urinating, or is too impatient to bear, she can check the urine routine to see if it is a disease such as urinary system infection. Pregnancy 4~12 weeks is a sensitive period for fetal teratogenesis. Medication should be carefully used under the guidance of doctors, but it is not absolutely forbidden. You can first drink a lot of water, urinate many times, flush the bladder and urethra, reduce the retention of bacteria in the urinary system, and then properly cooperate with anti-inflammatory drugs to reduce symptoms as soon as possible.
2. Bladder inflammation
In addition, the frequency of urination may also be due to other causes, such as inflammatory stimulation. When there is inflammation in the bladder, the threshold of nerve perception decreases, and the urinary sense center is in an excited state, resulting in non inflammatory stimulation of the frequency of urination. Urinary calculi and foreign bodies are usually manifested by frequency of urination. Decreased bladder capacity, such as space occupying lesions of the bladder, tuberculous bladder contracture or large bladder stones. The psychoneurotic frequency of urination is only seen in the daytime or before going to sleep at night. It is often nervous or seen in hysterical patients. At this time, it can also be accompanied by urgency and pain in urination. If you urinate frequently with urgency and pain, you must see a doctor in time.
Although many expectant mothers have frequent urination at the beginning of pregnancy, this is normal. However, some pathological signs cannot be ignored. After pregnancy, due to the displacement of the ureter and bladder, urine accumulates in the urinary tract, making it easy for bacteria to multiply and urinary tract infection to occur. If the expectant mother has pain when urinating, or is too impatient to bear, she can check the urine routine to see if it is a disease such as urinary system infection. Get medical attention immediately. Pregnancy 4~12 weeks is a sensitive period for fetal teratogenesis. Medication should be carefully used under the guidance of doctors, but it is not absolutely forbidden. You can first drink a lot of water, urinate many times, flush the bladder and urethra, reduce the retention of bacteria in the urinary system, and then properly cooperate with anti-inflammatory drugs to reduce symptoms as soon as possible.
In the first three months of pregnancy, the uterus gradually grows in the pelvic cavity and compresses the bladder, which makes the expectant mother always have a sense of urination. By the middle of pregnancy, the uterus will rise to the abdominal cavity, and the frequency of urination will be improved. But at the end of pregnancy, frequent urination will reappear. If the frequency of urination occurs, the amount of urination per time is not much (except for urinary tract infection), which is caused by the above reasons. If there is frequent urination and a large amount of urine, we should be alert to the possibility of diabetes and other conditions. At this time, we should go to the hospital for further examination. When feeling frequent urination, expectant mothers may as well go to the toilet several times. It doesn't matter. Try not to hold back urine. If there is pain or burning sensation when urinating, seek medical advice immediately.
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